Skip to content
Skip to content
TopHapOpen in map
Single Family ResidentialResidential
$278,887
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 79How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

550 W UNION ST

LONE ROCK, WI 53556
0
Baths
0.56 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$279K
$220K low$337K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$278,887
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$223,110

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,237 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$247,100 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$19,400
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$227,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$113,800
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$252,600

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residential
CountyRICHLAND
Lot (acres)The size of the land the home sits on, from county records.0.56
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
River Valley Elementary SchoolD
Elementary · Grades 1–4 · 6.3 mi
H
River Valley High SchoolB+
High · Grades 9–12 · 6.5 mi
M
River Valley Middle SchoolA
Middle · Grades 5–8 · 6.5 mi

District: River Valley School District

Neighborhood · ZIP 53556These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.119
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.77
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.21

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.2,229
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.46 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$69,542
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$78,055
Average tempThe average temperature here across a full year.46°F
Annual precipHow much rain and melted snow falls here in a typical year.33 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

550 W Union St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Has a smaller lot than 72% of homes in Lone Rock 53556

What homes are worth in Lone Rock 53556

Each bar is how many homes fall in that price range. The marker is this home.

This home
$47K$697K

This home is worth more than 63% of homes in Lone Rock 53556.

How it measures up in Lone Rock 53556

The dot is this home. The mark in the middle is the typical home in Lone Rock 53556.

Estimated value$278,887
CheaperTypical $228,488Pricier

Pricier than 63% of homes nearby

Lot size0.56 ac
SmallerTypical 1.19 acBigger

Bigger than 28% of homes nearby

How 550 W Union St ranks against every home in each area.
MeasureThis homeLone Rock 53556Richland County
Estimated valuepricier than$278,88763% of homes64% of homes
Lot sizebigger than0.56 ac28% of homes43% of homes

About 550 W Union St

How much is 550 W Union St, Lone Rock, WI worth?

The TopHap Estimate for 550 W Union St, Lone Rock, WI is $278,887 as of Jul 14, 2026. The likely range is $220,489 to $337,285. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 550 W Union St, Lone Rock, WI last sell?

550 W Union St, Lone Rock, WI last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 550 W Union St, Lone Rock, WI?

550 W Union St, Lone Rock, WI is assigned to River Valley Elementary School (elementary), rated D; River Valley High School (high), rated B+; River Valley Middle School (middle), rated A. All sit in River Valley School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 550 W Union St, Lone Rock, WI compare to other homes in Lone Rock 53556?

Among the 1,103 homes in Lone Rock 53556, it is worth more than 63% of them ($278,887 against a typical $228,488) and its lot is bigger than 28% of them (0.56 ac against a typical 1.19 ac). Measured against all of Richland County, it is worth more than 64% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 550 W Union St, Lone Rock, WI?

The 2025 property tax bill for 550 W Union St, Lone Rock, WI was $3,237. The county assessed it at $247,100.

Closest homes

More homes in Lone Rock 53556

Assigned schools

Explore the area

See this home in context

Open 550 W Union St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map